The content introduces a magnetic millirobot designed for targeted cargo delivery on challenging biological surfaces. The robot's locomotion, actuation system, and cargo deployment capabilities are thoroughly discussed and experimentally validated. Key aspects include the design, fabrication, control mechanisms, and potential biomedical applications of the millirobot.
The magnetic millirobot is equipped with sharp metallic tips as feet to anchor itself on slippery biological tissues efficiently. It can walk by alternating rotations around its front feet, exhibiting a bipedal gait. The robot's motion sequences enable it to climb vertical walls and carry loads up to four times its weight.
A permanent magnet set-up allows wireless actuation of the millirobot within human-scale volumes, providing precise control for complex trajectories and cargo delivery. The robot can inject liquid drugs into tissues at target locations after reaching them successfully.
Experimental results validate the effectiveness of the millirobot's locomotion on hydrogel phantoms and ex vivo animal tissues. Characterization studies demonstrate how varying parameters such as oscillating angle, pitch angle, frequency, and cargo weight affect the robot's speed and stability during movement.
The study highlights the potential of the magnetic actuation system for powering small-scale robots in biomedical applications like drug delivery and minimally-invasive procedures. Future research aims to optimize magnetic fields for specific applications and enhance biocompatibility aspects for real medical scenarios.
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by Moonkwang Je... at arxiv.org 03-08-2024
https://arxiv.org/pdf/2403.04467.pdfDeeper Inquiries